Mold for concrete tiles



Aug. 4, 1925. 1,548,485 I w H QUIMBY MOLD FOR CONCRETE TILES Filed April 6, 1921 3 Sheets-Sheet 1 INVENTOR BY ATTORNEY W. H. QUIMBY MOLD FOR CONCRETE TILES Filed April 6, 1921 5 SheetS Sheet 5 Aug. 4, 1925. 1,548,485

BY 17f ATTORNEY fig Patented filing. l,

norm son. concnn'rn irr'tns.

Application filed Apia s, 1921. Serial in. 4.59pm.

To all whom it may concern:

e it known that T, VALTER H. QUIMBY, a citizen of the United States, and resident ofNew York city, in the county of. New York and State of New York, have invented certain new and useful Improvements in Molds for Concrete Tiles, of which the following is a specification.

The object of my invention is to provide a mold for making concrete tiles or blocks, whereby the mold parts may be readily set up for use and the parts may be quickly detached for removing the molded tile or block.

improved mold is particularly adapted for making tiles or blocks having inner air spaces for inter-communication vertically when the blocks are set up and registering end holes for communication with said air spaces for lateral air circulation, providing hollow air enclosed walls. The mold also provides interlocking tiles both vertically and laterally with smooth or other desired exterior and interior surfaces, affording great resistance to side pressure as well as vertical pressure. v

My inventioncomprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings forming part hereof, wherein- Figure 1 is a perspective view of a mold embodying my invention ,Fig. 2 is a section on line 2, 2 in. Fig. 1, on a reduced scale, showing the concrete in position; Figs. 3

and 4f are perspective views illustrating different portions of the molded tile or block;

7 Fig. 5 is an enlarged longitudinal section of the mold; Fig. 6 is a section on line 6, 6 in Fig. 5; Fig. 7 is a horizontal section on line 7, 7 in Fig. 6; Fig. 8 isa plan view illiistrating my improvements having the mold members for casting individual tiles arranged in end-to-end relation; Fig. 9 isa plan view illustrating-the mold members in side-by-side relation; Fig. 10 is across section on, line 10, 10 in Fig. Fig. 11 is a perspective view showing tile assembled; Fig. 12 is asection on line 12, 12 in Figull.

Similar numerals of reference indicate 7 corresponding'partsin the several views.

The numeral 1 indicates the baseboardof the mold upon which the vertical side walls openings at 3 through which bottom and top boards fl, 5, are passed, said boards being maintained spaced apart by spaced boards 6 extending through the openings 3 of the side walls. When the parts 4, 5,. 6, are assembled spaces 7 and 8 are provided within the moldbetween the bottom and top boards 1, 1, respectively, for the concrete. The boards 4, 5, 6, provide a hollow knock-down and removable core for producing the spaces a in the tiles or blocks A. The side boards 6 of the core are preferably hinged at 9 to the top board 5, and the outer lower corners of the boards 6 are shown-cut away or beveled at 6? whereby the boards 6 may be swung from the boards up againstthe board 5 to release the core members from the molded concrete tile. preference the bottom board 4 is made in at least two parts having overlapping tapering joint at 4t (Fig. 5), whereby when the boards 6 are swung away from the board l the latter may be conveniently removed from openinga; of the tile or block A, and thereby the boards 5, 6, may be similarlyremoved. The tiles or blocks A have projecting and re-entrant portions a, (1 on opposite sides around the open ends of the openings a, for interlocking the opposing projeotin g and re-entrant portions of superimposed tiles, as illustrated in Fig. 12. The projecting portions (1 areproduced by means of longitudinally disposed spaced strips 10 having inclined tapering inner edges at 10 diverging from a side wall 2, to, the inner faces of. which wall the strips, are secured on opposite sides of the core boards l, 5, (Figs. 2 and 10). The re-entrant portions a of the tiles or blocks are produced by longitudinally disposed strips 11 secured along the side wall 2 opposite the strips 10, the outer edges 11 of which strips 11 are beveled or inclined converging inwardly from the adjacent side wall 2 corresponding to the in clinationofythe edges 10 of strips 10. The strips 11 are spaced a suitable distance from the top and bottom edges ofside wall 2. When theconcrete i spoured into themold it will enter the space between upper and lower strips 10 to produce the projecting portions a andwill flow outside of the strips 11, and of fillers on the corresponding side wall between the gates, the core,.and the adjacent-ends ofstrips 11 tov produce the reentrant portions 0. of, the tiles or blocks, (Figs. 2 and 10). j v

The end of t e bl cks a PW ided with.

projecting and re-entrant portions a a,

respectively, for interlocking of the blocks endwise disposed. To produce the'projecting and re-entrant portions 01 34, I provide end gates or walls 12 that extend between the bottom board and the side walls of the mold, spaced from the boards 4, 5, 6 of the core and located at the ends of. the strips 10, 11 for a tile. The gates or walls 12 have interior hollow projecting portions 12 facing in the same direction and shown provided with outer and inner correspondingly beveled faces 12, 12, (Figs. 1 and 5). The gates 12 are detachable from the mold and may he slid into place between the ends of the strips 10, 11. The hollow portion 12 in holes 14 in the projections 12 of the gates 12, preferably centrally disposed, and projecting suitably from the gates, whereby when the concrete is molded around the plugs and. the latter are removed the holes.

a will be formed in the tile- While my improved mold may be made in individual units for molding tiles or blocks singly, I prefer to arrange several mold members in series, either longitudinally end to end,'as in Fig. 8, or side by side, as in Fig. 9, or combined longitudinally and side by side as indicated by the dotted lines in Fig. 9. The extreme endgates 12 will be retained in place by vertical cleats 15 spaced from the adjacent ends of the strips 10, 11, to admit thegates 12, which construction will occur at both extremejends of the molds, the strips 10, 11, spaced end to end, as in Fig. 8, removably admitting the gates 12 therebetween. tion of the mold members in series permits the concrete to be poured at one time for a large number of tiles or blocks, similarly arranged, so that they may all set and hardon together, saving time in producing the tiles, since all the mold parts may be set up together and all may be readily dismantled. The boards 4, 5, 6 of the core may extend a considerable distance across several molds, as in Fig. 9, so that the core boards for several tiles or blocks may be removed at once by pulling the boards endwise through the cored openings in the adjacent tiles orblocks. 7

After the concrete has been poured the top board l may be slid along the top sur-' face of theconcrete to smooth it, and may The construcbe left in position for setting of the concrete or may be removed as desired. When the concrete has set and after the core boards have been removed, the side walls may be removed and the gates withdrawn from the blocks in a convenient and expeditious manner, after which the mold members may be reassembled-for the next pouring of concrete, and so on; The outer side walls 2 may be braced on the ground in any desired manner.

- The inner surfaces of the bottom and top boards 1 and 1 may be fashioned in any desired manner to produce any desired designs in the surface a! or 4 or both, of the tiles dry. Such air space within the blocks serves as insulation, by reason of the contained air, to keep the room warm in winter and cool in summer, owing to complete communication of the interior of all the blocks. The interlocking of the blocks on four sides secures against insecure or improper setting, since the blocks may be set up by ordinary labor and no mortar in the joints need be 7 used, although it may be if desired. While 'theblocks are shown in rectangular form it will be understood that the mold members may be made for straight, angular, or curved walls with special shapes for j ambs, lintels, sills and other structural parts. The construction of the blocks is such thatpipes may be run through the interior spaces for water, gas, wiring, or. heating. My improved molds permitmaking of the concrete blocks not only for buildings but for silos and other structures, and afford all the ad vantages of concrete blocks for structures and the like with reduced quantity of concrete for volume of tile by reason of the hollow interiorof the blocks. Having now described my invention, what I claim is I -1. A mold for concrete tilevcomprising a bottom and spaced side Walls thereon pro- 'vided with-opposed openings, core boards removably fitted to said openings, supported 2. A mold for a multiplicity of concrete tile end to end comprising a bottom and spaced walls thereon, said walls being provided with opposed openings, detachable core boards in said openings extending between and supported by said walls, strips along the inner faces of said walls, corresponding strips being spaced apart end to end, and gates between said walls upon said bottom having their end portions interposed in the spaces between said strips, the strips on one wall engaging the upper and lower core boards and the strips on the other wall being spaced respectively above and below said boards.

3. A mold for a multiplicity of concrete tile end to end comprising a bottom and spaced walls thereon, said walls being provided with opposed openings, detachable core boards in said openings extending between said walls and supported thereby, strips along the inner faces of said walls above and below said boards, corresponding strips being spaced apart end to end, and gates between said walls upon said bottom having their end portions interposed in the spaces between said strips and extending in the direction of said core boards, said gates having projecting and re-entrant portions extending in the same direction and spaced from the core boards.

Signed at New York city, in the county of New York, and State of New York, this 1st day of April, A. D. 1921.

WALTER H. QUIMBY. 

